*{
    margin:0px;
    padding: 0px;
}
.tab-wrap{
    width: 800px;
    height: 500px; 
    background-color: pink;
    margin: 100px auto;
}
ul{
   list-style-type: none; 
   display: flex;
   justify-content: space-evenly;
}
ul li{
    widows: 80px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    background-color: #999;
}
li:hover{
    color: red;
    border: 3px solid red;
}
.cont{
    width: 800px;
    height: 400px;
    margin-top: 30px;
    background-color: #999;
}
